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Port Protections

Posted on 2004-10-02
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Last Modified: 2010-04-19
I have a CCTV app that I run on my network.  It comes with a remote viewing application.  I used a port sniffer to see what ports the viewer used and opened them in NAT in Win Server 2003.  The viewes is fairly easy to come by, so I'm curious if there's any way to password protect or some other way to protect the ports the app uses?

I have setup a VPN and can use the viewer across it, but I would like to give some people access to the CCTV app with out giving them access to the VPN.
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Question by:mikemaner
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Dave_Dietz earned 1500 total points
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There is no way I know of to configure password protection on a Port, particularly not in NAT.  To do so would require some sort of shim in the TCP/IP stack and could easily introduce timing delays that would be unacceptable for normal network operation.

Generally you wil need to depend on the application binding the port to handle its own authentication (or at least use OS APIs for authentication tasks).

Sorry, but I hope this helps.

Dave Dietz
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